6811887 has 16 divisors (see below), whose sum is σ = 9538560. Its totient is φ = 4315872.

The previous prime is 6811879. The next prime is 6811891. The reversal of 6811887 is 7881186.

It is not a de Polignac number, because 6811887 - 2³ = 6811879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6811867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18378 + ... + 18744.

It is an arithmetic number, because the mean of its divisors is an integer number (596160).

Almost surely, 2^6811887 is an apocalyptic number.

6811887 is a deficient number, since it is larger than the sum of its proper divisors (2726673).

6811887 is a wasteful number, since it uses less digits than its factorization.

6811887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662.

The product of its digits is 21504, while the sum is 39.

The square root of 6811887 is about 2609.9591950833. The cubic root of 6811887 is about 189.5639770709.

The spelling of 6811887 in words is "six million, eight hundred eleven thousand, eight hundred eighty-seven".